| 摘要 |
PURPOSE:To prevent the occurrence of a sharp resonance and to obtain a smooth frequency characteristic by sticking to a voice coil, the sub-cone making a central hole stuck with the voice coil and an outer diameter non-symmetrical, simultaneously when the outer diameter shape of the sub-cone is made to an ellipse shape. CONSTITUTION:This is a cone shape which has an ellipse 6 shape with the diameter larger than an inner diameter 7, this is a sub-cone 5 which has a non-symetrical a<b shape in an inner diameter and ellipse outer shape and this is a double cone speaker which has a construction obtained by sticking a main cone 2 with an edge 3 and a sub-cone 5 to a voice coil 1. |
